New comer needs any and all help

[TinselKoala]

Well, you need to be careful about the input voltage because you can blow your transistor; Just like in the case of the Bedini motor, the base resistor will determine the current, and will have to be changed to suit your input voltage and your transistor model.

For the circuits we've been looking at, you need a NPN transistor, same as with the Bedini motor. 2n3055 for the powerful ones, 2n2222a or 2n3904 type for the low powered versions. Experiment!

The mosfets for the jacob's ladder flyback driver are specific, you must use IRFP260N, I get them for about $2.50 at my local supplier.( I think they must be used in high-power auto stereo systems or something, or why else would he actually keep them in stock?) Don't try to alter component specs or values in that circuit, until you have more experience, please. Other mosfets can be used but they must have very low "Rdss"... on-state resistance .... so just use the ones I specified.

But for low power JTs ... try any NPN type. First get your basic circuit working with 2n2222a, then sub in transistors you want to play with. Hook them up backwards, every which way, to see what happens. With a 1.5 or 3 volt JT you won't hurt your transistors by hooking them up wrong, I think, but with 9V you might.

[jhsmith87]

im using  the 2n3055. and like i said i would like to power a light bulb or something. i am using the digram you posted with the inductor you got from the tv. you dont think that transistor would handle 9v? what about 7.8v i have some lithium batteries that are 7.4 but charged fully go to 7.8v. and with my multimeter not having the correct fuse in it there is no way for me to read amps, i can volts, but most of the time its not 100% accurate.

so think of what i am doing. 10t 18g primary over 100t 26g pickup 2n3055 transistor and wanting to power a light bulb, hopefully a small appliance. such as a cell phone charger or something like that. i would think putting in 9v would get the output alot higher, and thought the transistor would handle 9v, since the bedini motor uses the same transistor, on 12v 3a power supply.
so what do you think i should do, or what will happen.

[TinselKoala]

Sure, use the 2n3055, and put a base resistor in there. The best would be to use the same variable resistor arrangement as for the Bedini motor. Or you could start with, say, 680R, 1/2 Watt, and see what happens. You can download a "data sheet" for your 2n3055 and see what the maximum permitted voltages between Base and Collector, Base and Emitter, and Emitter and Collector, and also the maximum allowed currents, and then choose your base resistor based on Ohm's law, your battery voltage, and the desired current from Base to Emitter.

You should be able to light up some bulbs with that, I'd think.


Meanwhile here are a couple pix of the Flyback driver board. I noted all the parts on there by their numbers on the schematic above; I hope this is helpful to you if you decide to build it.

[jhsmith87]

Yea the pics help a bit.. was that tiny black rod your coil?
But since I don't have the things needed to make that I'm building the diagram u posted before that one. Just differentcoil.
I'm still not done. I'm wondering what kinda volts I'll get set up like that with a 9v batt. I would like to see at least 24v

[TinselKoala]

Well, if I can get 170 volts from a triple A.... you should be able to get 24 from a nine-volt. But power isn't just voltage, you need current too, and short spikes have the effect of lowering the average current.
What kind of bulb are you wanting to light? You will for sure be able to light a bunch of LEDs, probably even a CFL if you got the windings right.

I dunno which tiny black rod you mean. The black-coated coils on the top right are two 60 microHy chokes in series to make the 120 microHy L1. The flyback transformer and the 8 turn center tapped primary are out of the shot, to the left, but you can see the three-terminal block where the primary hooks to the driver board on the left.